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A B S T R A C T An agricultural waste, cheap and easily available rice husk is chemically modified with acid/ base and used as an adsorbent for the removal of methylene blue (MB) (one of the industrially important dye) from aqueous media. The adsorption data were evaluated by Freundlich, Langmuir and Dubinin-Radushkevich isotherm models. Langmuir model showed best fit to the data indicating the formation of monolayer. The adsorption capacity (q m ) of the chemically modified rice husk was founddoi:10.1080/19443994.2012.719467 fatcat:bvc6kuyrxjg2dmb6b24tbslh4a